Cylinder-lock construction.



H. G. VOIGHT.

CYLINDER LOCK CONSTRUCTION.

APPLICATION FILED JUNE 9, 1014.

1, 1 1 5,040. I Patented Oct. 27, 1914.

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' CYLINDER LOCK CONSTRUCTION.

APIfLICATION FILED JUNE 9, 1914.

1,1 15,040. Patented 001. 27, 1914.

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HENRY G. VOIGI-IT, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO THE AMERICAN HARDWARE CORPORATION, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

CYLINDER-LOCK CONSTRUCTION.

Specification of Letters Patent.

Patented Oct. 27, 1914.

Application filed June 9, 1914. Serial No. 843,924.

To all whom it may concern.

Be it known that I, HENRY G. VOIGI'IT, a citizen of the United States, residing at New Britain, county of Hartford, State of Connecticut, have invented certain new and useful Improvements in Gylinder-Lock Construction, of which the following is a full, clear, and exact description.

This invention relates to a cylinder lock construction affording a variety of controls through the possible combinations of lock and key construction. a

In the accompanying drawings, which illustrate a preferableembodiment of the invention Figure l is a longitudinal vertical section through a cylinder lock constructed in accordance with the present invention, a first control key inserted therein. Fig. 2 is an end elevationof the part shown in Fig. 1. Fig. 3 is a transverse verticalsection on the line 3-3 of Fig. 1. Fig.4 is an end elevation of a cylinder lock with the main roll back, giving a quarter revolution and with the auxiliary roll back in its projected position. Fig. 5 is a longitudinal vertical section through the cylinder lock, with a key of another control inserted therein. Fig. 6 is a plan of certain keys cooperating with the inner plug of the cylinder lock. Fig. 7 is a plan of certain keys cooperating with both the inner and outer plug of the cylinder lock.

In a generic sense, the invention provides inner and outer rotatable plugs of. the usual type, controlled by the usual pin tumbler mechanism, the inner of these plugs fixedly carrying a roll back or cam member of a particular construction and this inner plug having a limited movement relative to and independently of the outer plug, both plugs being rotatable together through certain keys. This fixed cam carries an auxiliary and relative movable cam, which has at least two relative positions, as far as the fixed cam and inner plug are concerned, and is normally held in one of these two positions, but is moved from said position to its second position by means of certain keys.

Referring to the drawings by numerals, 1 indicates the usual cylinder lock casing and 2, an inner plug rotatably mounted therein.

3 designates an outer plug inclosing the inner plug 2 and eccentric relative thereto.

. Both the inner and outer plugs 2 and 3 are provided with the usual bores therein, in

which are mounted the usual pin tumblers 4t designed to be so positioned by the keys hereinafter referred to, that these pins will be positioned by differently bitted keys, with their ends in the line of break between the inner and outer plug and between the outer plug-and the casing respectively, so that in the first instance the inner plug alone may be rotated and so that in the second instance, both the inner and outer plugs may be rotatcd together. The inner plug is provided with the usual key slot 5 therein. The end of the inner plug 2 is extended beyond the casing 1 and has rigidly seated thereon, a roll-back or cam 6, so that when the inner plug rotates this cam 6 will rotate withsaid plug. The rear face of the outer plug 3 is provided with an arcuate slot 7 therein, forming substantially a semi-circle and the cam. 6 has rigidly connected thereto and projecting from its forward face a pin 8 riding in said slot 7 and limiting the independent movcment of the inner plug to a half turn or semi-circle, giving a quarter turn movement in either direction. The roll-back G is secured to the inner plug by suitable means such as the screws shown, (see Fig. 2) and has its rear face slotted and grooved to provide channels for guiding a sliding plate 9 at the outer face of the cam 6. This plate 9 carries at its upper end an offset head 10 formingian auxiliary rollback or cam movable. relative to the fixed cam 6 and to the plug. Rcarwardly of the plate 9 the main cam 6 is recessed to provide a spring, chamber 11 into which a pin 12 carried by the plate 9 extends. A. coiled.

spring 13 is seated in this spring chamber 11 and bears againstthe pin 12 normally forcing the plate 11 downwardly, so that its lower edge shown at 9 in Fig. 1 is in the line of the key hole slot 5. The specific construction of the fixed cam 6 and the auxiliary and movable cam 10, per 80, forms no part of the present invention and is disclosed and claimed in a prior Patent No. 1,093,811, dated April 21st, 1914. By applying this special cam construction to the inner of two plugs of a cylinder lock, and by giving this inner plug a limited movement independently of the outer plug, a large number of controls may be secured through such a cylinder lock mechanism.

In Fi l of the drawings, a short key lettered h typifies a class of keys designed to co'riperate with the tumbler mechanism so that the inner plug alone may be rotated, (though for a limited movement) with the second or auxiliary cam in its normal spring pressed position as shown in Figs. 1 and 2. This key A may be such as is fitted for one particular look only, while a second key A (Fig. 6) may be bittcd to perform the same functions but to operate, for instance, with a series of cylinder locks such, for instance, as all the locks on one floor. movement may be obtained by utilizing a third key such as A (Fig. 6) which is a long key engaging the lower end 9 of plate 9, and moving said plate and therefore second cam 10, from the position shown in Fig. 2, to that shown in Fig. 4. This key A may be bitted so as to rotate the inner plug only and so that the main cam 6 and auxiliary cam 10 may be rotated in such position only a quarter turn as shown in Fig. 4 of the drawings.

It will be seen that when the inner plug alone is rotated, it has a limited movement. By utilizing a series of keys bitted to move the pin tumblers so as to break on the line between the outer plug 3 and the casing 1, still further controls may be secured. For instance, a key B, (Fig. 7) which is a short key, may be bitted to so rotate the inner and outer plugs in unison so that the cam arm 6 may be given a complete revolution to afford a further control of a lock mechanism. As this key B is a short key, the auxiliary cam 10 will be in its normal spring pressed position during this complete revolution of the main cam 6. A. long key B however, may be provided which will engage the edge 9 of plate 9 and move the auxiliary camlO to its second position. This key B may be bitted to retate both the inner and outer plugs in unison so that a still further control may be secured through the new position of the second or auxiliary cam 10.

From the foregoing it will be apparent that a cylinder lock construction, such as de scribed, will provide through the cylinder lock itself, a variety of positions for the operating mechanism of said lock so that the bolt operating mechanism of the lock case may be controlled thereby in a variety of ways. So far as the operating means for this bolt mechanism is concerned, that, of course, forms no part of the present invention and can be varied in structure to suit the requirements in different cases. Fur thermore, while a particular embodiment of the invention has been disclosed herein, it will be understood that structurally, the invention is susceptible of various embodiments within the spirit of the invention and the scope of the appended claims.

What is claimed, therefore, is

1. In a cylinder lock, a casing, two rota- Still another table members therein controlled and rota table through a plurality of keys, one of said members being arranged for rotation both independently of and ointly with the second of said members, a roll back or cam carried by and rotating with the first of said members, said cam. being movable relative to said member and having; at least two relative positions, means normally tending to hold said cam in one of said two positions, means limiting the rotation of said first member relative to and independently of the second, certain of said keys being an ranged to cooperate with and rotate said first mentioned. nember only, and including a special key arranged to cooperate with and move said cam into the second of said two positions.

2. In a cylinder look, a casing, two rotatable members therein controlled and rotatable through a plurality of keys, one of said members being arranged for rotation both independently of and jointly with the second of said members, a rollback or cam carried by and rotating with the first of said members, said cam being movable relative to said member and having at least two relative positions, means normally tending to hold said cam in one of said two positions, means limiting the rotation of said first member relative to and independently of the second, certain of said keys being arranged to cooperate with and rotate said first mentioned member only and including a special key arranged to cotiperate with and move said cam into the second of said two positions, and certain other of said plurality of keys being arranged to cooperate with and rotate said first and second members together, said certain other keys including a special key arranged to cotiperate with and move said cam into the second of said we positions.

3. in a cylinder look, a casing, a rotatable member therein, a second rotatable member within said casing inolosing said first member, said members being controlled by and rotatable through a plurality of keys, said first member being arranged for rotation independently of and jointly with said second member, with means for limiting the rotation of said. first member independently of the second, a cam carried by and rotatable with said first member and movable relative thereto, said cam having at least two rela tive positions, withmeans normally holding said cam in one position, certain of said plurality of keys being arranged to 006p crate with and rotate said first member only and including a special key arranged to move said cam into the second of said two positions.

4. in a cylinder look, a casing, a rotatable member therein, a second rotatable member within said casinginclosing said first memher, said. members being controlled by and rotatable through a plurality of keys, said first member being arranged for rotation independently of and jointly with said second member, with means for limiting the rotation of said first member independently of the second, a cam carried by and rotatable with said first member and movable relative thereto, said cam having at least two relative positions, with means normally holdin said cam in one position, certain of sair plurality of keys being arranged to cooperate with and rotatesaid first member only and including .a special key arranged to move said cam into the second of said two positions, and certain other of said plmrality of keys being arranged to cooperate with and rotate said first and second members together, said certain other keys including a special key arranged to cooperate with and 4 move said cam into the second of said two positions.

5. In a cylinder look, a casing, a rotatable plug therein, a second rotatable plug inclosing said first plug, pin, tumbler mechanism cooperating with both of saidplugs, a plurality of keys cooperating with said tumbler mechanism and with said plugs, said keys being arranged to rotate said inner plug independently of and jointly with said outer plug, means limiting the independent rotation of said inner plug, a cam carried by and rotatable with said inner plug and movable relative thereto into at least two posi tions with means normally holding said cam in one of said positions, certain of said plurality of keys beingarranged to cooperate with and rotate said inner plug only and including a special key arranged to move said cam into the second of said two positions;

6. In a cylinder look, a casing, a rotatable plug therein, a second rotatable plug inclosing said first plug, pin tlinnbler mechanism cooperating with both of said plugs, a plurality of keys cooperating with said tumbler mechanism and with said plugs, said keys being arranged to rotate said inner plug independently of and jointly with said outer plug, means limiting the independent rotation of said. inner plug, a cam carried by and rotatable withsaid inner plug and movable relative thereto into at least two positions with means normally holding said cam in one of said positions, certain of said plurality of keys being arranged to cotiperato with and rotate said inner plug only and including a special key arranged to move said cam into the second of said two positions, and certain other of said plurality of keys being arranged to cooperate with and rotate said inner and outer plugs together, said certain other keys including a special key arranged to cooperate with and move said cam into the second of said two positions.

7. In a cylinder look, a casing, two rotatable members therein controlled and rotatable through a plurality of keys, one of said members being arranged for rotation both independently ol and jointly with the second of said members, a roll back or cam carried by androtating with the first mentioned oi. said members, means limiting the rotation of said first mentioned member relative to and independently of the second, a second roll back or cam associated with said first mentioned member, said second cam being movable relative to said member and having at least two relative positions, means normally tending to hold said second cam in one of said positions, certain of said plurality of keys being arranged to rotate said first mentioned member only and at least one special key of said plurality of keys being arranged to move said cam to a second position. i j

8. In a cylinder look, a casing, two rotatable members therein controlled and rotatable through a plurality of keys, one of said members being arranged for rotation both independently of and jointly with the second of said members, a roll back or cam carried by and rotating with the first men tioned of said members, means limiting the rotation of said first mentioned member relative to and independently of the second, a second roll back or cam associated with said first mentioned member, said second cam being movable relative to said member and having at least two relative positions, means normally tending to hold said second cam in one of said positions, certain of said plurality of keys being arranged to rotate said first mentioned member only, and including a special key arranged to move said cam to a second position, certain other of said plurality of keys being arranged to rotate both said first and second members together, said certain other keys including a special key arranged to move said second cam to said second position.

9. In a cylinder look, a casing, a rotatable member therein, a second rotatable member therein inclosing said first member, said members being rotatable through a plurality of keys, said inner lllCllllJOl' being arranged. for rotation independently of and jointly with said outer member with means for limiting the rotation of said inner member in dependently'of the outer member, a roll back or cam carried by and rotating with said inner member, a second roll back or cam associated with said inner member,

said second. cam being movable relative to. said. first cam and to said inner member, and being positioned in a different plane from the latte and having at least two relative positions with means normally tending to hold it in one of said positions, certain of said plurality of keys being arranged to rotate said inner member only and including nism cooperating with both of said. plugs, a

plurality of keys cooperating with said tumbler mechanism and with said plugs, said keys being arranged to rotate said inner plug independently of and jointly with said outer plug, means limiting the independent rotation of said inner plug, a roll back or cam carried by and rotating with said inner plug, a second roll back or cam carried by said first roll back and movable relative thereto into at least two positions with means normally tending to hold said second cam in one of said positions, certain of said plurality of keys being arranged to cooperate with and rotate said inner plug only and including a long key arranged to cooperate with and move said second cam into the second of said two positions, and certain other of said plurality of keys being arranged to cooperate with and rotate both said inner and outer plugs together, the said certain other keys including a special long key arranged to cooperate with and move said second cam into the second of said two positions.

' HENRY G. VOIGHT.

Witnesses HENDERSON l5. HILL, R. G. MITCHELL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G. 

